Roller-roughing machine



(No Model.) v A. MITCHELL. 4 ROLLER ROUGHING MACHINE. No. 317,167.`jPatentedrMay 5,11885.

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UNITED STATES.

PATENT OFFICE.

ARCHIBALD MITCHELL; OF NEW' ORLEANS, LOUISIANA.

ROLLER-ROUGHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 3 1'7,167, dared May s,1885.

Application inea May 1. Iseli. (No model.)

To wZZ whom it may concern:

Be it known that I, ARCHIBALD MITCHELL, of New Orleans, in the parish ofOrleans and State of Louisiana, have invented a new and ImprovedRoller-Roughing Machine,of which the following is a full, clear, andexact description.

My invention consistsof a simple contrivance of mechanism for roughingthe surfaces of canemill rollers to enable them to bite 7 and hold thecane to draw it in between the rollers more eifectually than the smoothsurfaces produced by wear of the cane will the said improved contrivancebeing, essentially, a hardened steel mllling-tool in an arrangement ofmechanism for .pressing it against the surface of the roller while beingrevolved, and for causing the tool to traverse slowly along the rollerfrom end to end, together with means for mounting the apparatus on thehousings of the cane-mill,

so that the roughing attachment may perform its work at the same timethat the Inill is employed for grinding the cane to avoid loss of timefor roughing the rollers, all as hereinafter fully described. Y

Reference is to be had to the accompanying drawings, forming part ofthis specification,

in which similar letters of reference indicate corresponding parts inall the figures.

Figure 1 is a sectional elevation of my improved cane-roller-roughingapparatus as ap- .plied to a roller, which is partly shown in transversesection; -and Fig. 2 is a front elevation of the |principal portion ofthe roughing-machine.

I make a frame consisting of two broad parallel plates, a, and two endpieces, b, bolting the plates to said endpieces at c, and making the endpieces suitably for bolting through a hole, t, to the housings of asugar-cane mill, so that the plates a, which are of suitable length toextend from one side to the other of said frame, will be supported'infrontof the roller d, and form a slideway in `which the slide e, for thesupport of the stock j' of a milling-tool, g, may be so mounted that itmay be made to traverse along the slideway from end to end of the rollerd, while being pressed against the surface of the roller to indent androughen the same.

For causing the traverse of the slide it has a nut, g, through which afeed-screw, h,

works, said screw being mounted in bearings 1I, attached to the slideframe near each end, and having a driving-pulley,j, on which a belt maybe run to work the screw.

Any approved means of reversing the niotion of the driving-belt maybeused for changing the direction of the motion of the slide.

The milling-tool is mounted by its journals 6o as a spring, lever, cord,weight, and pulley or other contrivance; but I prefer to employhydraulic pressure by iittingthe end of cylinder a with hydraulicpacking 0,connecting a stand-pipe, p, with the bore m, lling the samewith oil or other liquid, and fitting a vertical weighted plunger, q, inthe stand-pipe,with a cap, s, containing suitable packing, screwed onthe top of the stand-pipe to confine the liquid. This makes a verysimple device,which is uniform in its action and not liable to get outof order.

Son.

When it is desired to suspend action of the milling tool, the weightedplunger may be lifted up a little by a lever or other means. The effectof the weighted plunger on the milling-tool will be as much greater thanthe weight of the plunger as the area of the cylinder u is greater thanthat of the plunger.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The improved cane-roller-roughing machineconsisting of a milling-tool, g, combined with stock f, slide e,slideway a b, and means, substantially as described, for pressing thetool against the surface of said roller, said slideway being arrangedand supported parallel with the roller d, substantially as hereinspecified.

2. The improved cane-roller-roughing machine consisting of amilling-tool, g, combined with stock f, slide e, slideway a b, andmeans, substantially as described, for pressing the ICO" tool againstthe surface of the roller, said hydraulic pressure, and said slidehaving a 1o slideway being adapted to be attached to the standpipe, p,and Weighted plunger q, and housing-frame of the cane-mill forsupporting being arranged in the slideWay a b, adapted the slide andmilling-tool relatively thereto, for application to rollers d of acane-mill,

5 substantially as herein specified. substantially as described.

3. The improvedcane'roller-ronghing `ma- ARGHIBALD MITCHELL. chineconsisting of the milling-tool g, mount- XVitiiesses: ed in a stock, f,having a cylindrical exten- GHAs. J. LEEDS,

sion, n, fitted in the bore m of the slide e, for H. REMINGTON.

